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Bottom door edges - bubbling paint?

Mc2472

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Is this what I think it is? Have this on bottom edges of 2 doors.

The Jeep is barely 2 years old, has Expel protective film installed on all surfaces (including all door edges with film wrapped around them). Zero damage to door edges (no dents, scratches, anything that would penetrate the paint). I even sprayed a bit of Blaster Surface Shield inside the cavity of every door a few weeks after taking delivery.

WTF???

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What year is this jeep?
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randyhub

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I still don't understand this. My friend's 2019 has bubbling everywhere. My 2020 with more miles has no corrosion bubbling. Why?
 

bcupton

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What are the chances of a 2025 Gladiator having corrosion issues?
 

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ek1

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Day 1 spray cavity wax into the doors hood and tailgate
It won't stop corrosion, only delay/slow it (maybe). I sprayed Blaster Surface Shield (a lanoline-based product) into all door cavities 1 week after taking delivery. 2 out of 4 doors already have corrosion on the bottom.
 
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ek1

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I still don't understand this. My friend's 2019 has bubbling everywhere. My 2020 with more miles has no corrosion bubbling. Why?
I researched this a LOT and the answer seems to be shoddy manufacturing process. This could involve a number of things, including but not limited to:
  • Subpar/inconsistent quality of aluminum panels (i.e. inconsistency of the allow used)
  • Inconsistent/poor sealing (i.e. sealing of hem flanges and joints)
  • Inconsistent/poor application of primer (gaps, inadequate thickness) before paint.
  • Poor storage conditions (i.e. panels being stored in a corrosive/contaminated environment prior to use)
  • Poor prep (i.e. panels not being cleaned/prepped properly before paint)
  • Poor isolation at dissimilar metal contact points (i.e. when steel and aluminum parts are in direct contact, causing galvanic corrosion)
Once any/all of the above take place, you are at the mercy of many random things that occur during the normal use of the vehicle. For example, if your Jeep lives in a state where roads are salted during the winter or in a coastal area, the salt speeds up corrosion. But if you try to wash the Jeep often to get rid of salt, you may end up with water being retained in many body cavities that are almost fully enclosed, which may also accelerate corrosion. If you live in an area with a lot of pollution and keep your Jeep outside, acid rains may accelerate corrosion. If you keep your Jeep in a garage, not having it exposed to the elements may delay corrosion, but also because it's not in the sun, water may be retained in some body cavities, accelerating corrosion. Paint chips, even tiny ones, will accelerate corrosion. It becomes an equation with multiple unknown variables.

I wish you best of luck and I hope your Jeep never gets corrosion, but the fact that there are thousands of posts from owners on forums and social media (covering Wranglers made from 2018 to 2024) as well as a number of law firms advertising services to Wrangler owners with corrosion issues probably means your corrosion is not a question of "if", but a question of "when".
 

ScotM

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Clubs
 
It won't stop corrosion, only delay/slow it (maybe). I sprayed Blaster Surface Shield (a lanoline-based product) into all door cavities 1 week after taking delivery. 2 out of 4 doors already have corrosion on the bottom.
Well that’s sucks. I used the 3M stuff, nothing so far, but mine is only a 2022, so not old yet
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